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miR-449a, a novel tumor suppressor, is deregulated in various malignancies, including prostate cancer. Overexpression of miR-449a induces cell cycle arrest, apoptosis, and senescence, but its role in response to ionizing radiation and underlying molecular mechanism are still unknown. Here, we report that miR-449a enhances radiation-induced G2/M phase arrest… (More)

MicroRNAs (miRNAs) have been reported to be involved in DNA damage response induced by ionizing radiation (IR). c-Myc is reduced when cells treated with IR or other DNA damaging agents. It is unknown whether miRNAs participate in c-Myc downregulation in response to IR. In the present study, we found that miR-449a enhanced radiosensitivity in vitro and in… (More)